碩士 / 國立臺北科技大學 / 電機工程系研究所 / 100 / The study aims at transient and steady state voltage stability analyses of the existing power system in parallel with a hundred wind turbines which each rated at 1.5MW. The wind turbines are connected to 161kV Taixi and Sihu substations with a double-loop transmission lines via a new offshore substation. Two categories of simulation have been completed. The steady state simulations include power flow studies and voltage stability analyses between the wind turbines and existing power system under operation condition at maximum and minimum wind turbine outputs.
The fault current and short-circuit capacity have also been calculated when 3 phase fault occurred at offshore substation. Voltage disturbances at existing substations are included in transient studies. When the wind turbine is encounting a gust or blast of winds, the far end turbine group which is connected to the offshore substation with longest transmission lines, has been tripped, the voltage disturbance at existing 161kV substations have been observed. In order to improve the transient voltage stability, a STATCOM rated 50MVAr has been considered to install at offshore substation to compensate active power requirement. The voltage collapse condition and the rotor angle variation of the nearby power generators have been examined when 3-phase fault occurred at offshore substation.
| Identifer | oai:union.ndltd.org:TW/100TIT05442002 |
| Date | January 2012 |
| Creators | Ze-Zuo Tu, 凃澤佐 |
| Contributors | Ta-Peng Tsao, 曹大鵬 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 105 |
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